(tex. is a part of ...) a town in southwest Texas on the Rio Grande to the west of San Antonio

(tex. is a part of ...) a large commercial and industrial city in northeastern Texas located in the heart of the northern Texas oil fields

(... is part of tex.) North American republic containing 50 states - 48 conterminous states in North America plus Alaska in northwest North America and the Hawaiian Islands in the Pacific Ocean; achieved independence in 1776